The crying you are worried about is a pressure problem, and it has a specific cause, a specific timing and one reliable fix. Knowing which part of the flight matters changes what you do.
Descent is the problem, not takeoff
The middle ear is connected to the back of the throat by the Eustachian tube, which equalises pressure across the eardrum. On climb, cabin pressure falls and air vents out of the middle ear relatively easily. On descent, cabin pressure rises and air has to be forced back in — and that direction is much harder, because the tube tends to collapse against the higher outside pressure.
Babies have shorter, narrower, more horizontal Eustachian tubes than adults, which is why this affects them more and why they cannot fix it deliberately. They also cannot do the thing you do without thinking: swallow on purpose.
So the plan is simple. Have them swallowing during descent — the last thirty to forty minutes of the flight, not the first ten.
The mechanism
Why descent hurts and climb does not
Climb
Descent
Cabin pressure
Falls
Rises
Which way air must move
Out of the middle ear
Back into the middle ear
How hard that is
Relatively easy — it vents
Harder — the tube tends to collapse against the higher outside pressure
What to do
Usually nothing
Have them swallowing — feed, bottle or pacifier
What works
- Feeding. Breast, bottle or a sippy cup. Sucking and swallowing open the tube repeatedly, which is exactly the mechanism you need. This is the single most effective thing available.
- A pacifier, if they take one and are not hungry.
- Staying awake through descent. Swallowing is less frequent asleep. Waking a sleeping baby feels wrong and is usually the kinder choice on the way down.
- Upright. Slightly better drainage than flat.
Save a feed for the descent rather than settling them an hour before landing. That one piece of timing does more than everything else combined — and it is why what you are allowed to carry through security matters more than it first appears.
Timing
When to feed, and when not to
- 1Takeoff and climbNo action needed. Air vents out of the ear on its own.
- 2CruiseFeed normally — but hold something back for later rather than settling them an hour before landing.
- 3Start of descentThis is the feed that matters. Sucking and swallowing open the tube repeatedly, which is exactly the mechanism needed.
- 4Through to landingKeep them upright and swallowing. Waking a sleeping baby here feels wrong and is usually the kinder choice.
What does not work
- Filtered ear plugs of the type sold for flying. They slow the rate of pressure change in the ear canal — the outer side of the eardrum. They do nothing for the Eustachian tube, and they are sized for older children and adults.
- Decongestants. Not recommended for infants, and studies in children have not shown a clear benefit for this specific problem. Do not give an infant medication for a flight without asking your paediatrician.
- Blowing in the face, or holding the nose. Neither is a technique a baby can cooperate with.
Straight answers
What helps, and what does nothing
✓ Helps
- Feeding on descent — breast, bottle or sippy cup
- A pacifier, if they take one
- Staying awake through the descent
- Holding them upright
✕ Does nothing
- Filtered “flight” ear plugs — they act on the outer side of the eardrum, not the Eustachian tube, and are sized for older children and adults
- Decongestants — not recommended for infants, and no clear benefit shown in children for this
- Blowing in the face, or holding the nose
When to think twice about flying at all
A baby with an active ear infection or a heavy cold has a Eustachian tube that is already inflamed and blocked, which is the situation where descent genuinely hurts and can occasionally cause injury.
This is a conversation for your doctor rather than a checklist, and it is worth having before you fly rather than at the gate. Nothing here is medical advice — it is the mechanism, so that the advice you are given makes sense.
How much of this will you actually need?
Plenty of babies fly with no distress at all. The value in knowing the mechanism is that it tells you what to do when it does happen: not to panic on the climb, and to have something to feed on the descent.
- Time a feed for the start of descent.
- Wake them for it if they are asleep.
- Skip the ear plugs and the decongestants.
- Do not fly a baby with an active ear infection without medical advice.
Part of flying with a baby. The other in-flight problems — where to put them down, and what you are allowed to bring — are covered in the bassinet guide and the liquid rules.
